The input and output connectors on the rakit drum synth and baby 8 sequencer are standard 3.5mm mono jack cables. There are a three interesting ways you can connect the baby8 to the drum synth:
CV Out ⇨ Pitch
Using just the pitch input allows you to get some interesting effects. The pitch control knob on the drum synth can be used as an offset on the input CV, you can transpose the entire sequence up or down in pitch.
Try using a fast sequence and trigger the drum by hand or some slow external trigger.
Gate ⇨ Trigger
Using just the trigger control allows you to set a consistent beat pattern. The baby8 can be setup to skip gate steps which can lead to some really lo fi drum loops.
Using both pitch and trigger inputs on the drum synth allows for some really quirky compositions comprised of low and high tones. Having both inputs connected to the baby8 allows for some fine tuning to both tempo and high low composition.